US Department of Transportation’s Federal Transit Administration (FTA) has allocated $300m for the Bay Area Rapid Transit (BART)’s Transbay Corridor Core Capacity project.

The project, which aims to bolster the capacity of the heavy rail system between Oakland and downtown San Francisco, was awarded through FTA’s Capital Investment Grants (CIG) programme.

Additionally, FTA agreed to advance the Transbay Corridor Core Capacity Project into the engineering phase.

The step will further advance the project to a fully funded grant agreement from the CIG programme.

US Transportation Secretary Elaine L Chao said: “This investment in public transportation infrastructure will improve mobility for the many riders who depend on public transit every day in the Bay Area.”

Currently, BART operates 23 trains per hour in each direction through the Transbay Tube during peak commute hours.

With ridership expected to increase in future, the Transbay project will enable BART to operate 30 ten-car trains in each direction per hour.

The scope of the project also includes procuring additional railcars, installation of a communications-based train control (CBTC) system to increase the frequency of train operations through the Transbay Tube, and building a railcar storage yard to accommodate new vehicles.

Additionally, BART will upgrade the electrical system that powers railway operations with five new substations in San Francisco and East Bay.

The CIG programme is designed to provide funding for major transit infrastructure capital investments across the US.

Under the present administration, FTA has advanced funding for 23 CIG projects, with a combined value of $6.3bn.